Beam and SKS spectrometers at the K1.8 beam line

Beam and SKS spectrometers at the K1.8 beam line
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K1.8 光束线上的光束和 SKS 光谱仪

DOI:
10.1093/ptep/pts023
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发表时间:
2012
期刊:
Prog. Theor. Exp. Phys.
影响因子:
--
通讯作者:
et al.
et al.
中科院分区:
--
文献类型:
--
作者:
T. Takahashi;et al.

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在K1处已经建造了入射光束和散射粒子的高分辨率光谱仪。8束线的强子实验设施在J-PARC。在QQDQQ磁体的入口和出口之间实现了一个点到点的光学系统。细间距线室跟踪器和hodoscope计数器安装在光束光谱仪接受高达107赫兹的高速率光束。散射粒子的超导K介子谱仪是从KEK转移过来的,对低温系统和探测器进行了修改。在2010年E19的第一次物理运行中,质子靶上(π±,K+)反应峰的丢失质量分辨率达到1.9±0.1 MeV/c2(FWHM)。
High-resolution spectrometers for both incident beams and scattered particles have been constructed at the K1. 8 beam line of the Hadron Experimental Facility at J-PARC. A point-to-point optics is realized between the entrance and exit of QQDQQ magnets for the beam spectrometer. Fine-pitch wire chamber trackers and hodoscope counters are installed in the beam spectrometer to accept a high rate beam up to 107 Hz. The superconducting kaon spectrometer for scattered particles was transferred from KEK with modifications to the cryogenic system and detectors. A missing-mass resolution of 1.9±0.1 MeV/c2 (FWHM) was achieved for the peaks of (π±, K+) reactions on a proton target in the first physics run of E19 in 2010.
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